Plasmonic Ag/SiO<inf>2</inf> composite nanoparticles doped with europium chelate and their metal enhanced fluorescence

Deng, W; Jin, D; Drozdowicz-Tomsia, K; Yuan, J; Wu, J; Goldys, EM

Plasmonic Ag/SiO<inf>2</inf> composite nanoparticles doped with europium chelate and their metal enhanced fluorescence

Deng, W Jin, D

Drozdowicz-Tomsia, K Yuan, J Wu, J Goldys, EM

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Publication Type:: Conference Proceeding
Citation:: Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 2011, 7909
Issue Date:: 2011-03-21

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Field	Value	Language
dc.contributor.author	Deng, W	en_US
dc.contributor.author	Jin, D https://orcid.org/0000-0003-1046-2666	en_US
dc.contributor.author	Drozdowicz-Tomsia, K	en_US
dc.contributor.author	Yuan, J	en_US
dc.contributor.author	Wu, J	en_US
dc.contributor.author	Goldys, EM	en_US
dc.date.issued	2011-03-21	en_US
dc.identifier.citation	Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 2011, 7909	en_US
dc.identifier.isbn	9780819484468	en_US
dc.identifier.issn	1605-7422	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120195
dc.description.abstract	We report silver nanostructure-enhanced fluorescence of a europium (Eu) chelate, BHHCT-Eu-DPBT, which was covalently bound in Ag/SiO2 nanocomposites. This design enhances the europium signal intensity by more than one order of magnitude, and accelerates the decay time from 0.3 ms down to 60 microseconds, at low excitation conditions. These nanocomposites were bright enough to be observed in time-gated fluorescence microscopy under 365 nm LED excitation. The increased brightness and reduced lifetime of such fluorescent core-shell nanocomposites will enhance their applicability for ultrasensitive bioassays and bioimaging, especially with time-gating. © 2011 SPIE.	en_US
dc.relation.ispartof	Progress in Biomedical Optics and Imaging - Proceedings of SPIE	en_US
dc.relation.isbasedon	10.1117/12.872833	en_US
dc.title	Plasmonic Ag/SiO<inf>2</inf> composite nanoparticles doped with europium chelate and their metal enhanced fluorescence	en_US
dc.type	Conference Proceeding
utslib.citation.volume	7909	en_US
utslib.for	1007 Nanotechnology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	7909	en_US

Abstract:

We report silver nanostructure-enhanced fluorescence of a europium (Eu) chelate, BHHCT-Eu-DPBT, which was covalently bound in Ag/SiO2 nanocomposites. This design enhances the europium signal intensity by more than one order of magnitude, and accelerates the decay time from 0.3 ms down to 60 microseconds, at low excitation conditions. These nanocomposites were bright enough to be observed in time-gated fluorescence microscopy under 365 nm LED excitation. The increased brightness and reduced lifetime of such fluorescent core-shell nanocomposites will enhance their applicability for ultrasensitive bioassays and bioimaging, especially with time-gating. © 2011 SPIE.

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http://hdl.handle.net/10453/120195